2099819 has 8 divisors (see below), whose sum is σ = 2196480. Its totient is φ = 2005416.

The previous prime is 2099809. The next prime is 2099821. The reversal of 2099819 is 9189902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2099819 - 2¹⁶ = 2034283 is a prime.

It is a super-2 number, since 2×2099819² = 8818479665522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (274560).

2^2099819 is an apocalyptic number.

2099819 is a deficient number, since it is larger than the sum of its proper divisors (96661).

2099819 is a wasteful number, since it uses less digits than its factorization.

2099819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 2099819 is about 1449.0752223401. The cubic root of 2099819 is about 128.0542372688.

The spelling of 2099819 in words is "two million, ninety-nine thousand, eight hundred nineteen".